Katastari, Greece offers 1 beach perfect for sunbathing, surfing, swimming, and more. Katastari, Ionian Islands, Greece, is known for its proximity to the famous Navagio Beach and the Blue Caves. The best time to travel to Katastari, Greece, is from May to September, with average air temperatures ranging from 25-30°C (77-86°F) and water temperatures around 22-26°C (72-79°F). Sandee provides detailed maps, photos, and reviews from fellow beachgoers to help you Choose Your Beach™ and plan your perfect beach vacation!